With little fanfare, the first available devices running Nvidia's Tegra 4 ARM chip have popped up at Best Buy and Amazon. The Toshiba Excite Write and Pro tablets are 10.1-inch slates based on Tegra 4, whereas the Pure is another Tegra 3 device. All three new slates appear to be available for purchase right now.

The Tegra 3-based Pure tablet is a midrange affair with a 1280x800 resolution 10.1-inch screen. It comes with 16GB of storage and 1GB of RAM.

Say hello to Toshiba's 2013 Android tablet lineup. Though the company still hasn't made a dent in the tablet market, it's not for lack of trying, and the latest trio of ten-inchers proves that they're not ready to give up the ghost. All three have roughly the same body and dimensions: the Excite Pure is Toshiba's new low-end offering, the Excite Pro is for gamers and resolution junkies, and the Excite Write steps up to Samsung with both high-end specifications and a digitizer-stylus combo.